From: Tim Pease <tim.pease@...>
Date: 2011-10-26T01:28:12+09:00
Subject: Re: Add logger to module/class


On Oct 25, 2011, at 9:34 AM, Kassym Dorsel wrote:

> I want a dual logger so I have sub-classed Logger with this :
> class Logging < Logger
>  def initialize(file, stdout=false)
>    @log_file = Logger(file)
>    @log_out = Logger(stdout) if stdout
>  end
>  #Override the logger's methods to write to both stdout and file if
> needed
> end
> 

Take a look at the "Logging" gem as it already support logging to multiple destinations. The interface for logger objects is the same as the core Ruby logger class.

docos  => http://rubydoc.info/gems/logging/frames
source => https://github.com/TwP/logging

> How would I implement a global logger for the module and the main. The
> logger would be initiated within the main and I'd want to pass it to the
> module with the same parameters, given a module like this :
> 

One trick you can use with the Logging framework is this

  require 'logging'
  include Logging.globally

This will add a "logger" method to Object which will be inherited by every object in your application. This will allow you to do call "logger.info" within your module or any other class.

Blessings,
TwP